Comparison

Margins vs KMK Optometry Pages

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Margins

This app helps you discover, track, and share your reading journey. It offers detailed tracking options, customizable features, and powerful search capabilities. Stay focused on your reading goals with built-in tools to minimize distractions.

Highlights
  • Half-star ratings
  • Track recommendations
  • Customizable book covers
  • Fuzzy date tracking
  • Advanced book search
  • Reading goals
  • Reading timer
  • Distraction blocking
Features
Currently charting
Read full description

Margins is a beautifully designed app for people who love books. - App of the Day in 20+ countries - 4.9 rating (40,000+ reviews) - Featured in USA Today, BookRiot, and more TRACK YOUR READING - Log books, series, authors, recommendations, and more - Track Strava-style goals, stats, and streaks - Curate lists of books you care about SEARCH BOOKS BY VIBES - Search books by mood, plot, setting, vibe, and more - Try things like “books like 1920s Paris,” “thriller with a love triangle,” or “indie romantasy” - You can even turn images from Pinterest or your camera roll into book recommendations BLOCK DISTRACTING APPS - Block social media, notifications, and other apps while you read - Use meditation reading timer for soothing rain sounds CHOOSE YOUR COVERS - Pick the cover that matches your version of the book - Curate covers to fit your aesthetic - Sort your library by color CUSTOMIZE YOUR PROFILE - Turn your picture into a sketched portrait you’d see in a book - Show off your favorite books SEE WHAT FRIENDS ARE READING - Find and follow other book lovers - See what they’re reading in Stories - Enjoy gorgeous, hand-illustrated monthly recaps INVITE YOUR BOOK CLUB - Schedule gatherings - Suggest and vote on books - Log your club’s history LEAVE GOODREADS FOR GOOD - Import from Goodreads, StoryGraph, and Fable - Half-star ratings - Support a small, indie team WHAT PEOPLE ARE SAYING “LOVE this app! so easy to import data from goodreads. it excels where others fail. like letterboxd for books. Really glad there’s finally a good book app out there, i’ve been waiting for something like this!” — scruffythejanitor01 “I love the UI of this app, easy to use and aesthetically pleasing. Also, I've been struggling getting back into reading and the screentime feature has helped me loads. I haven't been able to read this much since 4 years ago. Thank you Margins” — mitakaluvr “The search by vibes is so cool. I am a WWII buff, but this search popped up a two-book WWII saga I had never even heard of, much less read. It ended up being my top read of 2025.” —Michigancolt FREE TO USE Almost all features are free to use. An optional subscription unlocks premium features and priority support. FOLLOW US Instagram: @readwithmargins TikTok: @margins TERMS OF USE Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Margins Terms of Service: https://margins.app/terms Privacy Policy: https://margins.app/privacy “Without the margins, writing is just words on a page. But with them, each of us is invited to leave our mark in the endless conversation between books and the people that love them.” — Excerpt from the Margins manifesto

About

KMK Optometry Pages

This e-reader app helps optometry students study more efficiently. It offers a seamless reading experience for digital textbooks, an audiobook feature for hands-free learning, and AI-powered tools for summaries, clarifications, and comprehension questions.

Highlights
  • Seamless e-reader experience
  • Built-in audiobook feature
  • AI-powered summaries
  • AI-powered clarifications
  • AI-generated comprehension questions
  • Access to digital textbooks
Features
Read full description

"KMK AI Reader is your all-in-one study companion—designed to help you learn more efficiently and engage with your content like never before. Access your full library of KMK digital textbooks and materials through a seamless e-reader experience. Whether you’re flipping through pages or jumping into a quick review session, your study tools are always within reach. Prefer to listen? The built-in audiobook feature allows you to study hands-free, perfect for commutes, workouts, or reviewing on the go. But what really sets KMK AI Reader apart is the smart AI integration. You can highlight any section of your book and instantly get summaries, clarifications, or simplified explanations—tailored to your level of understanding. Not sure you’ve mastered a concept? Generate comprehension questions based on what you’re reading to actively test yourself and reinforce key material. With KMK AI Reader, it’s not just about reading—it’s about learning better. Perfect for busy optometry students looking to maximize their prep, stay organized, and take control of their study time. Download now and elevate your KMK study experience with the power of AI."

Screenshots

Margins4 screens
KMK Optometry Pages4 screens

Verdict

The call

The clearest difference is review sentiment: Margins at 95% against KMK Optometry Pages's 33%. Margins also leads on rating (4.9 vs 2.0) and update cadence (every 4 days vs every 2 months). KMK Optometry Pages's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Margins sells 2 in-app purchases, starting at $5.99 per month. KMK Optometry Pages asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Margins holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: Margins has 20K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 95% of Margins's written reviews are positive against 33% of KMK Optometry Pages's.

UpkeepUpdate frequency

Margins ships an update every 4 days, KMK Optometry Pages every 2 months. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

Scorecard8 real differences · 3 level
Margins versus KMK Optometry Pages: the parameters behind the verdict, then further details
ParameterMarginsKMK Optometry Pages
PriceFreeFree
Rating4.9 (20K ratings) — better2.0 (5 ratings)
Positive reviews95.3% of reviews — better33.3% of reviews
Number of ratings20K — better5
Update frequencyEvery 4 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#100 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.014.0 — better
Further details — not scored
Size115 MB77 MB
Age rating12+4+
DeveloperParatext Inc.KMK Optometry

Customer experience

Margins

All ratings19,672 ratings
Positive98.6%
Neutral0.8%
Negative0.6%
Written reviews3,709 reviews
Positive95.3%
Neutral2.4%
Negative2.3%

KMK Optometry Pages

All ratings5 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and requests

Margins

Reported bugs

3 issues
  • Reading time not saving correctly
  • Inability to delete or edit books from lists
  • Inconsistent behavior when importing data from Goodreads

Requested features

4 requests
  • Add ability to track page progress and percentage read
  • Implement a profile system with custom avatars and bios
  • Introduce a social feed to share reading activity with friends
  • Add more advanced statistics and reading analytics

KMK Optometry Pages

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Margins

Subscriptions2
  • Monthly$5.991 Month
  • Annual$59.991 Year
None

KMK Optometry Pages

No in-app purchases

Questions

Is Margins free?
Margins is free to download, with in-app purchases available.
Is KMK Optometry Pages free?
KMK Optometry Pages is free to download, with no in-app purchases.
Which has better reviews, Margins or KMK Optometry Pages?
Margins is rated higher. Margins averages 4.9 out of 5 from 20K ratings, while KMK Optometry Pages averages 2.0 from 5 ratings.
Do Margins or KMK Optometry Pages have ads?
Neither Margins nor KMK Optometry Pages shows ads.
Which is updated more often, Margins or KMK Optometry Pages?
Margins ships an update every 4 days, and KMK Optometry Pages every 2 months. Most recently, Margins was updated on October 19, 2026 and KMK Optometry Pages on October 16, 2026.

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